Senior Systems Administrator.

Accountabilities

• Provide Tier 2 and Tier 3 technical support, serving as the primary escalation point for complex infrastructure, authentication, Microsoft 365, access, and system-level issues.

• Troubleshoot and resolve advanced user, system, and performance issues across hybrid cloud and on-premises environments.

• Manage employee onboarding, offboarding, and lifecycle activities across identity platforms, applications, and devices.

• Deploy, configure, and maintain hybrid server, storage, networking, and endpoint infrastructure across organizational sites.

• Configure and deploy applications through centralized management tools such as Company Portal.

• Develop, maintain, and optimize automation scripts using PowerShell, Python, Bash, or similar technologies to streamline operational processes.

• Manage, monitor, and validate backup, restoration, and disaster recovery solutions for hybrid systems.

• Perform regular system updates, patching, and security-hardening activities to maintain stability and compliance.

• Support container deployments, updates, troubleshooting, and availability management.

• Lead infrastructure projects by translating business and technical requirements into solutions and coordinating implementation across teams.

• Implement, maintain, and improve security policies and technical controls across cloud and on-premises environments.

• Conduct security assessments, vulnerability remediation, and compliance validation in collaboration with security and governance teams.

• Coordinate with security and incident response teams on investigations, containment measures, and forensic activities.

• Implement and administer monitoring and observability solutions, including Azure Monitor and Zabbix.

• Configure alerts and notifications to identify infrastructure issues and performance degradation proactively.

• Analyze infrastructure performance metrics and implement optimization strategies to improve reliability, scalability, and efficiency.

• Troubleshoot complex system failures and coordinate resolution efforts across cross-functional teams.

• Maintain accurate technical documentation, architectural diagrams, and operational runbooks.

• Participate throughout the infrastructure lifecycle, including requirements gathering, design, deployment, testing, integration, cutover, and ongoing maintenance.

• Configure and deploy servers, storage, networking equipment, and endpoint devices across organizational locations.

• Maintain the cybersecurity posture of assigned systems through sound security engineering practices, including access controls, least-privilege principles, centralized authentication, and vendor-recommended security configurations.

• Perform additional job-related responsibilities as assigned.

Requirements:

• Bachelor's degree in a related field or equivalent professional experience in place of a degree.

• At least 6 years of relevant systems administration experience.

• CompTIA Security+ CE certification or an equivalent qualification.

• Practical scripting experience with Python, PowerShell, Bash, or similar languages.

• Knowledge of at least five of the following technologies or areas:

  • Windows Server 2019 and 2022.

  • Windows 11.

  • Ubuntu 22.04 LTS.

  • iDRAC and iLO.

  • Docker.

  • Enterprise networking.

  • Endpoint security.

  • Vulnerability remediation.

  • Knowledge of at least five of the following cloud technologies:

    • Virtual machines.

    • Azure vWAN, vHub, VNets, subnets, WAF, and Application Gateway.

    • SharePoint and Exchange.

    • Microsoft Entra ID.

    • Azure Virtual Desktop.

    • Azure Update Manager.

    • Key Vaults, Storage Accounts, and Managed Identities.

    • Strong analytical, troubleshooting, and problem-solving abilities.

    • Excellent communication skills, with the ability to explain technical issues to both technical and non-technical audiences.

    • Ability to work effectively in a fast-paced environment, manage competing priorities, and maintain attention to detail.

    • Commitment to operational excellence, system reliability, and continuous improvement.